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Finding the Fourth Proportional to 477.35, 715.14 and 245.87

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Solution

The fourth proportional to 477.35, 715.14 and 245.87 is: 368.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    477.35 : 715.14 = 245.87 : x
  2. Step 2: Convert to fraction form
    477.35/715.14 = 245.87/x
  3. Step 3: Cross multiply
    477.35x = 715.14 × 245.87
  4. Step 4: Simplify right side
    477.35x = 175,827.90
  5. Step 5: Solve for x
    x = 175,827.90/477.35
  6. Step 6: Final answer
    x = 368.35

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.